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54 lines
2.3 KiB
Go
54 lines
2.3 KiB
Go
package cloudprovider
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import (
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"context"
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corev1 "k8s.io/api/core/v1"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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cloudprovider "k8s.io/cloud-provider"
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)
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var _ cloudprovider.LoadBalancer = &k3s{}
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// GetLoadBalancer returns whether the specified load balancer exists, and if so, what its status is.
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func (k *k3s) GetLoadBalancer(ctx context.Context, clusterName string, service *corev1.Service) (*corev1.LoadBalancerStatus, bool, error) {
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if _, err := k.getDaemonSet(service); err != nil {
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if apierrors.IsNotFound(err) {
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return nil, false, nil
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}
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return nil, false, err
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}
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status, err := k.getStatus(service)
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return status, true, err
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}
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// GetLoadBalancerName returns the name of the load balancer.
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func (k *k3s) GetLoadBalancerName(ctx context.Context, clusterName string, service *corev1.Service) string {
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return generateName(service)
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}
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// EnsureLoadBalancer creates a new load balancer 'name', or updates the existing one. Returns the status of the balancer.
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// The node list is unused; see the comment on UpdateLoadBalancer for information on why.
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// This is called when the Service is created or changes.
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func (k *k3s) EnsureLoadBalancer(ctx context.Context, clusterName string, service *corev1.Service, nodes []*corev1.Node) (*corev1.LoadBalancerStatus, error) {
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if err := k.deployDaemonSet(ctx, service); err != nil {
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return nil, err
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}
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return nil, cloudprovider.ImplementedElsewhere
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}
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// UpdateLoadBalancer updates hosts under the specified load balancer.
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// This is not used, as it filters node updates based on criteria not compatible with how our DaemonSet selects
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// nodes for inclusion. It also does not provide any opportunity to update the load balancer status.
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// https://github.com/kubernetes/kubernetes/blob/v1.25.0/staging/src/k8s.io/cloud-provider/controllers/service/controller.go#L985-L993
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func (k *k3s) UpdateLoadBalancer(ctx context.Context, clusterName string, service *corev1.Service, nodes []*corev1.Node) error {
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return cloudprovider.ImplementedElsewhere
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}
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// EnsureLoadBalancerDeleted deletes the specified load balancer if it exists,
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// returning nil if the load balancer specified either didn't exist or was successfully deleted.
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func (k *k3s) EnsureLoadBalancerDeleted(ctx context.Context, clusterName string, service *corev1.Service) error {
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return k.deleteDaemonSet(ctx, service)
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}
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